Sir William Blackstone (10 July 1723 – 14 February 1780) was an English jurist, justice, and Tory politician most noted for his Commentaries on the Laws of England, which became the best-known description of the doctrines of the English common law. Born into a middle-class family in London, Blackstone was educated at Charterhouse School before matriculating at Pembroke College, Oxford, in 1738. After switching to and completing a Bachelor of Civil Law degree, he was made a fellow of All Souls College, Oxford, on 2 November 1743, admitted to Middle Temple, and called to the Bar there in 1746. Following a slow start to his career as a barrister, Blackstone was involved heavily in university administration, becoming accountant, treasurer, and bursar on 28 November 1746, and Senior Bursar in 1750. Blackstone is considered responsible for completing the Codrington Library and the Warton Building, and for simplifying the complex accounting system used by the college. On 3 July, 1753, he formally gave up his practice as a barrister, and embarked on a series of lectures on English law, the first of their kind. These talks were massively successful, earning him £453 (£94,000 in 2025 terms); they led to the publication of An Analysis of the Laws of England in 1756, which sold out repeatedly. It was used to preface his later works.
On 20 October, 1759, Blackstone was confirmed as the first Vinerian Professor of English Law, immediately embarking on another series of lectures and publishing a similarly successful second treatise, A Discourse on the Study of the Law. With his growing fame, he successfully returned to the bar and maintained a good practice, also securing election as Tory Member of Parliament for the rotten borough of Hindon on 30 March 1761. In November 1765 he published the first of four volumes of Commentaries on the Laws of England, considered his magnum opus; the completed work earned Blackstone £14,000 (£2,459,000 in 2023 terms). After repeated failures, he gained appointment to the judiciary as a justice of the Court of King's Bench on 16 February 1770, leaving to replace Edward Clive as a justice of the Common Pleas on 25 June. He remained in this position until his death, on 14 February 1780.